We have a whirlpool Pool Coin operated commercial washer. The coins were put in and the tub began to fill for about 30 seconds, then stopped. When the electrical connections were checked and the plug was pulled out of the wall and re-connected, about two second's worth of water would enter the tub and quit. You could do this repeatedly when unplugging and replugging the washer. It didn't matter what water temperature or type of cycle was selected. When resetting the digital display with the rocker switch, inside the coinbox housing, three separate 3 digit codes came up: 638,639 and 640.

My research would suggest, I may have a defective water pressure switch. Would this be the first place to start looking and how do I access it? Is it under the control panel or inside the machine housing itself? Your diagnosic help would be greatly appreciated.

Thanks, G. Charles